INDUSTRIAL INDEXING SYSTEMS IIS MSC-850/32 SYSTEM UNIT

Product Overview

An MSC-850/32 System Unit consists of

the ENC-850 Unit Enclosure and the MAC-850/32

Main Processor utilizing 32-bit technology (Figure

1-1). The MSC-850/32 System Unit is the heart

of the Motion Control System. The System Unit

houses the electronics that perform the central

processing control functions and I/O functions of

the Motion Control System.

DESCRIPTION

The ENC-850 Unit Enclosure

The ENC-850 Unit Enclosure (Figure 2-1)

consists of a forced-air ventilated metal cabinet

and a motherboard to support the functional

boards of the Motion Control System.

The Unit Enclosure comprises a Command

Bus (C-BUS), 8 controller slots, connections for

up to 8 On-board I/O Modules, a Resolver

Reference Generator, 2 Angle Buses, an I/O Bus,

and 2 Power supplies.

Command Bus

The Command Bus (C-BUS) (Figure 2-2) is

a parallel digital communications bus connecting

the Main Processor to the controllers. The C

BUS runs under a protocol established by a

unique Industrial Indexing Systems' operating

system and is accessed by the user's

Macroprogram.

The C-BUS allows Macroprogram

commands to be sent from the Main Processor to

the controllers.

It also allows data to be

exchanged between the Main Processor and the

controllers.

Controller Slots

The 8 controller slots (Figure 2-3) accept

any controller in any combination. The controllers

are; ACR-850 Resolver Axis Controller, ACE-850

Encoder Axis Controller, MCF-850 Multifunction

Controller, HPL-850 High Performance Limit

Switch Controller, or ACM-850 Analog Controller.

The controller slots are connected to 2

Angle Buses, On-board Input Modules, and the

C-BUS. Power is supplied to the controllers

through the controller slots. A 2.6KHz Resolver

Reference signal is supplied through the

controller slots to the ACR-850 Resolver Axis

Controllers.

On-Board I/O Modules

The connections for the eight On-board I/O

modules (Figure 2-4) allow process inputs to be

connected directly to the controllers. They also

connect process inputs and outputs to the Main

Processor by way of the I/O Bus. The input and

output modules can be either AC or DC. The IIS

part numbers for the six different plug-in modules

are listed in Table 2-1 below.

Each On-Board I/O Module Connects to

both the Main Processor and a corresponding

controller (e.g. I/O Module 1 connects to the

controller in slot 1. I/O Module 2 connects to the

controller in slot 2. etc..).

The Main Processor can read inputs and

set outputs. Inputs are used by the control

programs to monitor the status of external

devices. Outputs allow the control programs to

affect the status of external devices.

The controllers can read inputs from On

Board Input Modules. These inputs are used with

control program functions to provide fast

hardware interrupts, typically used to initiate a

motion or motion related event.